<template>
  <el-container class="home-container">
    <!-- 头部区域 -->
  <el-header>  
      <div>
          <img src="../assets/heima.png">
          <span>电商后台管理系统</span>
      </div>
    <el-button type="info" @click="logout">退出</el-button>   
  </el-header>
  <el-container >
    <!-- 左侧菜单栏 -->
    <el-aside :width="foldToggle?'64px':'200px'">
      <div class="toggle-button" @click="toggleButton">|||</div>
      <!-- 一级导航栏 -->
        <el-menu
      background-color="#545c64"
      text-color="#fff"
      active-text-color="#409EFF" unique-opened	:collapse='foldToggle' :collapse-transition='false' :router='true'>
      <el-submenu :index="item.id+''" v-for="item in menulist" :key=item.id>
        <template slot="title">
          <i :class="iconsObj[item.id]"></i>
          <span>{{item.authName}}</span>
        </template>
        <!-- 二级导航栏 -->
          <el-menu-item :index="'/'+subItem.path" v-for="subItem in item.children" :key="subItem.id" @click="saveNavStatus('/'+subItem.path)" :default-active="activePath">
              <template slot="title">
              <i class="el-icon-menu"></i>
              <span>{{subItem.authName}}</span>
              </template>
          </el-menu-item>
      </el-submenu>
    </el-menu>
    </el-aside>
    <!-- 右侧菜单栏 -->
    <el-main><router-view></router-view></el-main>
  </el-container>
</el-container>
</template>
<script>
export default {
    data () {
        return {
            menulist:[],
            iconsObj:{
                '125':'iconfont icon-users',
                '103':'iconfont icon-tijikongjian',
                '101':'iconfont icon-shangpin',
                '102':'iconfont icon-danju',
                '145':'iconfont icon-baobiao',
            },
            foldToggle:false,
            activePath:''
        }
    },
    // 页面打开就开始加载
    created(){
        this.getMenuList(),
        this.activePath=window.sessionStorage.getItem('activePath');
    },
  methods: {
    logout() {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    async getMenuList(){
        const {data:res} = await this.$http.get('menus')
        if(res.meta.status!=200) return this.$message.error(res.meta.msg)
        this.menulist=res.data;
    },
     toggleButton(){
      this.foldToggle=!this.foldToggle
    },
    saveNavStatus(activePath){
      window.sessionStorage.setItem('activePath',activePath)
      this.activePath=activePath
    }
  },
}
</script>
<style lang="less"scoped>
  .el-header {
    display: flex;
    justify-content: space-between;
    background-color:#373D41;
    padding-left: 0;
    align-items: center;
    color:#fff;
    font-size: 20px;
    >div{
        display: flex;
        align-items: center;
        span{
            margin-left: 10px;
        }
    }
}
.el-aside {
    background-color: #333744;
    .el-menu {
      border-right: 0;
    }
}
.el-main {
    background-color:#eaedf1;
}
.home-container {
    height:100%;
}
.iconfont {
    margin-right: 10px;
}
.toggle-button {
  background-color: #4a5064;
  font-size: 10px;
  color: #fff;
  text-align: center;
  line-height: 24px;
  letter-spacing: 0.2em;
}
</style>